Rhododendron decorum Franch.
EOL Text
Rhododendron decorum is grown as an ornamental.
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| Rights holder/Author | Wen, Jun, Wen, Jun, Plants of Tibet |
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Rhododendron decorum (大白杜鹃) is a rhododendron species native to Myanmar and Guizhou, Sichuan, Xizang, and Yunnan, China, where it grows at altitudes of 1000–3300 meters. It is a shrub or small tree that grows to 1–6 m in height, with leathery leaves that are oblong, oblong-ovate or oblong-elliptic, 5–19 by 3–11 cm in size. Flowers are white to pale pink.
Synonyms
- None recorded.
References
- "Rhododendron decorum", Franchet, Bull. Soc. Bot. France. 33: 230. 1886.
- The Plant List
- Flora of China
- Hirsutum.com
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R. franchetianum Leveille, Bull. Soc. Agric. Sarthe 39: 45 (1903). Syntypes: China, Yunnan, environs de Yunnan-sen, 11 xi 1896, Bodinier (E) & 28 iii 1897, Ducloux (E). R. spooneri Hemsley & Wilson, Kew Bull. 1910: 110 (1910). Syntypes: China, W Sichuan, nr Tatsien-lu, 2650-3650 m, vi 1904, Wilson 3975 (A); NW Yunnan, Tsekou, Monbeig (K). R. giraudissii Leveille, Feddes Repert. 18: 340 (1914). Type: China, E Yunnan, mont de Siao-ou-long, 2700 m, vi 1913, Maire (holo. E)
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NE Burma, China (Yunnan, Sichuan, W Guizhou)
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Shrubs or small trees, 1-6 m tall; young shoots greenish, glabrous. Petiole 12-40 mm, glabrous; leaf blade thickly leathery, oblong, oblong-ovate or oblong-elliptic, 5-19 (-30) cm long, 3-11 cm wide; base cordate or cuneate to nearly rounded; apex obtuse, rounded, apiculate; both surfaces glabrous when mature; abaxial surface pale green; adaxial surface deep green, midrib prominent abaxially, grooved adaxially; lateral veins 18-paired. Inflorescence 8-10-flowered; rachis 20-25 mm, sparsely glandular. Pedicel stout, 2.5-4 cm, glandular-hairy; calyx lobes 5, 1.5-2.5 mm, glandular-hairy; corolla funnel-campanulate, fragrant, white to pale pink, 3-10 cm long, 5-9 cm wide, outer surface sparsely glandular, inner surface puberulent at base; lobes 6-8, suborbicular, ca. 2 × 2.4 cm, emarginate or entire; stamens 13-16, unequal, 2-3 cm, filaments pubescent at base; ovary cylindric, ca. 6 mm, densely glandular-hairy; style 3.4-4 cm, with similar glands to tip; stigma 2-5 (-6.5) mm in diameter. Capsule oblong, usually slightly curved, 25-40 mm long, 10–15 mm wide.
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| Rights holder/Author | Wen, Jun, Wen, Jun, Plants of Tibet |
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W Guizhou, SW Sichuan, SE Xizang, Yunnan [Myanmar].
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Rhododendron decorum is occurring in W Guizhou, SW Sichuan, SE Xizang, Yunnan of China, Myanmar.
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| Rights holder/Author | Wen, Jun, Wen, Jun, Plants of Tibet |
| Source | http://plantsoftibet.lifedesks.org/pages/560 |
Shrubs or small trees, 1–6 m tall; young shoots greenish, glabrous. Petiole 12–40 mm, glabrous; leaf blade thickly leathery, oblong, oblong-ovate or oblong-elliptic, 5–19(–30) × 3–11 cm; base cordate or cuneate to nearly rounded; apex obtuse, rounded, apiculate; both surfaces glabrous when mature; abaxial surface pale green; adaxial surface deep green, midrib prominent abaxially, grooved adaxially; lateral veins 18-paired. Inflorescence 8–10-flowered; rachis 20–25 mm, sparsely glandular. Pedicel stout, 2.5–4 cm, glandular-hairy; calyx lobes 5, 1.5–2.5 mm, glandular-hairy; corolla funnel-campanulate, fragrant, white to pale pink, 3–10 × 5–9 cm, outer surface sparsely glandular, inner surface puberulent at base; lobes 6–8, suborbicular, ca. 2 × 2.4 cm, emarginate or entire; stamens 13–16, unequal, 2–3 cm, filaments pubescent at base; ovary cylindric, ca. 6 mm, densely glandular-hairy; style 3.4–4 cm, with similar glands to tip; stigma 2–5(–6.5) mm in diam. Capsule oblong, usually slightly curved, 25–40 × 10–15 mm. Fl. Apr–Jun, fr. Sep–Oct.
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Shrub or small tree, 1-6 m. Leaves oblanceolate to elliptic, (5.5—)7—15 x (2.2-)3-6.8 cm, (2-)2.3-3 x as long as broad, apex ± rounded, mucronate, base rounded, lower surface glabrous when mature except for punctulate hair bases; petioles 1.5-4 cm, glabrous. Inflorescence 7-10-flowered; rhachis 15-30 mm; pedicels 15-30 mm, stipitate-glandular. Calyx 1-3 mm, lobes minute, rounded, stipitate-glandular. Corolla 6-7-lobed, funnel-campanulate, usually sparsely glandular outside, often more densely so within, white to pale pink, with or without green or crimson flecks, 45-55(-62) mm. Stamens 14-16, filaments puberulent below. Ovary and style stipitate-glandular, glands whitish. Capsule 20-30 x c. 12 mm, usually slightly curved.
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Forests, thickets; 1000–3300 m.
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